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Answer: Isolated AWS Regions with independent Availability Zones and redundant connectivity.
The correct answer is D. AWS achieves high availability and fault tolerance by constructing its infrastructure with isolated AWS Regions, each containing multiple, physically separate Availability Zones. These Availability Zones are designed to be independent, with their own redundant power supplies, networking, and cooling systems, ensuring that if one zone experiences an outage, the others remain operational. This setup allows for low-latency networking between Availability Zones within the same Region, which is crucial for maintaining the performance and reliability of applications distributed across these zones.
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What is the design of AWS global infrastructure that ensures high availability and fault tolerance?
A
AWS Regions and Availability Zones with low flood risk and interconnected with low-latency networks.
B
Subnets with Availability Zones and multiple data centers in the same geographic location.
C
User selection of AWS Regions and data centers for proximity.
D
Isolated AWS Regions with independent Availability Zones and redundant connectivity.